Phthia

00189, 1878 RA, 1878RA, I78R00A

All data for this body: [vot]

MPC data
Name (number) Phthia (189)
a 2.45156
e 0.03687
i / sin(i) 5.1729 / 0.09016
q 2.36116
Q 2.54196
ω 169.8725
Node 203.3120
m 77.3162
n 0.2568
Epoch 2460800.5
nobs 9775
nopp 60
Years observed 1880-2025
rms 0.52
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.450
ep 0.015
sin(ip) 0.098
G 0.150
H 9.380
Mass 3.805e+16 6.859e+15
D 39.62 0.225
pV 0.221 0.0115
Value
Rotational Period 22.340
Period quality 3
Spectral Class S
Spectral Class Score 27.950
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4504 0.0150 0.0983 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Mass data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.7200e+16 1.2700e+16 1.2700e+16 Baer 2008CeMDA.100...27B Deflec
3.8400e+16 8.1500e+15 8.1500e+15 Baer 2008DPS....40.5209B Deflec
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
32.38 1.485 1.485 Ryan&Woodward 2010AJ....140..933R IRAS-STM
37.66 2.000 2.000 Tedesco 2002AJ....123.1056T STM
38.49 0.320 0.320 Masiero 2014ApJ...791..121M NEATM
40.56 0.394 0.394 Masiero 2011ApJ...741...68M NEATM
40.85 3.218 3.218 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
42.47 0.670 0.670 Usui 2011PASJ...63.1117U NEATM
43.16 4.320 4.320 Ali-Lagoa 2018A&A...612A..85A NEATM
43.85 1.410 1.410 Masiero 2012ApJ...759L...8M NEATM
44.41 8.880 8.880 Ali-Lagoa 2018A&A...612A..85A NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.170 0.0310 0.0310 Masiero 2012ApJ...759L...8M NEATM
0.187 0.0750 0.0750 Ali-Lagoa 2018A&A...612A..85A NEATM
0.198 0.0400 0.0400 Ali-Lagoa 2018A&A...612A..85A NEATM
0.199 0.0244 0.0244 Masiero 2011ApJ...741...68M NEATM
0.208 0.0328 0.0328 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.220 0.0400 0.0400 Masiero 2014ApJ...791..121M NEATM
0.231 0.0270 0.0270 Tedesco 2002AJ....123.1056T STM
0.317 0.0293 0.0293 Ryan&Woodward 2010AJ....140..933R IRAS-STM
G data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.15 MPC-2023-12-94 MPC-2023-12-94 Phot
H data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
9.38 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
15.0 1 Synodic Harris 1992Icar...95..115H Lightcurve
22.24 2- Synodic Behrend LCDB Lightcurve
22.34159 2 Sidereal Martikainen 2021A&A...649A..98M Model
22.3416 2 Sidereal Hanus 2016A&A...586A.108H Model
22.346 3 Synodic Pilcher 2009MPBu...36...25P Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S Bus-DeMeo VISNIR Bourdelle de Micas 2022A&A...665A..83B SPEC
S Tholen VIS Clark 1995Icar..113..387C PHOT
S 0.990000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
Sa Bus VIS Bus 2002Icar..158..146B SPEC